moving data from Spreadsheet into 2-Var based on a category

[mbeddo]

Hello Snorre,

Thank you! It works just fine.

I also have a TI nSpire, and the operation to filter a list based on a criteria is something that is lacking there as well, yet needing to filter lists comes up quite common in basic data analysis.

Functional languages typically have a function that is prototyped something like "filter(fun, x)" where "x" is a list of "things" and "fun" is a Boolean function that is called as we iterate through "x". The output is a filtered list - those elements in "x" that satisfy your criteria.

You kindly provided me with a "gem" (get_x_where_y_equals_z) which I will tuck away in a safe place. When I learn more about programming the HP Prime, maybe I'll end up with a more functional filter function.